c# - 从另一个模型视图将数据插入数据库

Question

我的项目有两个模型类，

public class BookModel
{
    public Int64 ISBN { get; set; }
    public DateTime AddedDate { get; set; }
    public bool isActive { get; set; }
    public int Quantity { get; set; }
    public int? FormatID { get; set; }
    public virtual FormatModel Format { get; set; }
}

和

public class FormatModel
{
    public FormatModel()
    {
        Books = new HashSet<BookModel>();
    }

    public int ID { get; set; }
    public string Value { get; set; }

    public virtual ICollection<BookModel> Books { get; }
}

Create.cshtml如果指定的格式不存在，我想在我的文件中创建一个模式来添加新格式。

如何为我的模态创建一个提交按钮以添加格式FormatModel？

这是我的看法：

@model RookBookMVC.Models.BookModel

@{
    ViewBag.Title = "Create";
    Layout = "~/Views/Shared/_Layout.cshtml";
    ViewBag.ReturnUrl = "/Book/Create";
}

<h2>Create</h2>

@using (Html.BeginForm("Create", "Book", FormMethod.Post))
{
    @Html.AntiForgeryToken()

    <div class="form-horizontal">
        <h4>BookModel</h4>
        <hr />
        @Html.ValidationSummary(true, "", new { @class = "text-danger" })

        <div class="form-group">
            @Html.LabelFor(model => model.FormatID, "FormatID", htmlAttributes: new { @class = "control-label col-md-2" })
            <div class="input-group col-md-10">
                @Html.DropDownList("FormatID", null, "Select Book Format", htmlAttributes: new { @class = "form-control" })
                <div class="input-group-append">
                    <button type="button" class="btn btn-secondary" data-toggle="modal" data-target="#exampleModalCenter">
                        Add New
                    </button>
                </div>
            </div>
            @Html.ValidationMessageFor(model => model.FormatID, "", new { @class = "text-danger" })
        </div>

        <div class="form-group">
            @Html.LabelFor(model => model.ISBN, htmlAttributes: new { @class = "control-label col-md-2" })
            <div class="col-md-10">
                @Html.EditorFor(model => model.ISBN, new { htmlAttributes = new { @class = "form-control" } })
                @Html.ValidationMessageFor(model => model.ISBN, "", new { @class = "text-danger" })
            </div>
        </div>

        <div class="form-group">
            @Html.LabelFor(model => model.Quantity, htmlAttributes: new { @class = "control-label col-md-2" })
            <div class="col-md-10">
                @Html.EditorFor(model => model.Quantity, new { htmlAttributes = new { @class = "form-control" } })
                @Html.ValidationMessageFor(model => model.Quantity, "", new { @class = "text-danger" })
            </div>
        </div>

        <div class="form-group">
            <div class="col-md-offset-2 col-md-10">
                <input type="submit" value="Create" class="btn btn-default" />
            </div>
        </div>
    </div>
}

@using (Html.BeginForm("Create", "Format", FormMethod.Post))
{
    @Html.AntiForgeryToken()
    <div class="modal fade" id="exampleModalCenter" tabindex="-1" role="dialog" aria-labelledby="exampleModalCenterTitle" aria-hidden="true">
        <div class="modal-dialog modal-dialog-centered" role="document">
            <div class="modal-content">
                <div class="modal-header">
                    <h5 class="modal-title" id="exampleModalLongTitle">Add New Format</h5>
                    <button type="button" class="close" data-dismiss="modal" aria-label="Close">
                        <span aria-hidden="true">&times;</span>
                    </button>
                </div>
                <div class="modal-body">
                    <div class="form-group">
                        @Html.LabelFor(model => model.Format.Value, htmlAttributes: new { @class = "control-label col-md-2" })
                        <div class="col-md-10">
                            @Html.EditorFor(model => model.Format.Value, new { htmlAttributes = new { @class = "form-control" } })
                            @Html.ValidationMessageFor(model => model.Format.Value, "", new { @class = "text-danger" })
                        </div>
                    </div>
                </div>
                <div class="modal-footer">
                    <button type="button" class="btn btn-secondary" data-dismiss="modal">Close</button>
                    <input type="submit" value="Create Format" class="btn btn-default" />
                </div>
            </div>
        </div>
    </div>
}

<div>
    @Html.ActionLink("Back to List", "Index")
</div>

@section Scripts {
    @Scripts.Render("~/bundles/jqueryval")
}

单击“创建格式”按钮后。它返回 falseModelState.IsValid并且不向我的数据库添加任何数据

我应该怎么做才能使“创建格式”按钮为格式创建一个新实体并将其保存在我的数据库中？

对于其他我需要通过一个页面创建两个模型

标签： c#asp.net-mvcentity-frameworkmodel-view-controller

Answer 1

public class MYViewModel{   public string FormatValue { get; set; } }

创建.cshtml

@model MYViewModel

    <div>
      @Html.EditorFor(model => model.FormatValue, new { htmlAttributes = new { @class = "form-control" } })
    </div>

你的意思是这样的吗？或者

 public class MYViewModel{   
  public string FormatValue { get; set; } 
  Public BookModel Book {get; set;}
}